Macrocyclic peptide-based inhibition and imaging of hepatocyte growth factor

Katsuya Sakai, Toby Passioura, Hiroki Sato, Kenichiro Ito, Hiroki Furuhashi, Masataka Umitsu, Junichi Takagi, Yukinari Kato, Hidefumi Mukai, Shota Warashina, Maki Zouda, Yasuyoshi Watanabe, Seiji Yano, Mikihiro Shibata, Hiroaki Suga, Kunio Matsumoto

研究成果: Article査読

27 被引用数 (Scopus)

抄録

Activation of hepatocyte growth factor (HGF) by proteolytic processing is triggered in cancer microenvironments, and subsequent signaling through the MET receptor is involved in cancer progression. However, the structure of HGF remains elusive, and few small/medium-sized molecules can modulate HGF. Here, we identified HiP-8, a macrocyclic peptide consisting of 12 amino acids, which selectively recognizes active HGF. Biochemical analysis and real-time single-molecule imaging by high-speed atomic force microscopy demonstrated that HiP-8 restricted the dynamic domains of HGF into static closed conformations, resulting in allosteric inhibition. Positron emission tomography using HiP-8 as a radiotracer enabled noninvasive visualization and simultaneous inhibition of HGF–MET activation status in tumors in a mouse model. Our results illustrate the conformational change in proteolytic activation of HGF and its detection and inhibition by a macrocyclic peptide, which may be useful for diagnosis and treatment of cancers.

本文言語English
ページ(範囲)598-606
ページ数9
ジャーナルNature Chemical Biology
15
6
DOI
出版ステータスPublished - 2019 6 1

ASJC Scopus subject areas

  • 分子生物学
  • 細胞生物学

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